Exercises - I — task. Science State Board, Class 9.

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எங்கள் ஆசிரியர்களுடன் 1-ஆன்-1 ஆலோசனை நேரத்தைப் பெறுங்கள். டாப்பர் ஆவதற்கு நாங்கள் பயிற்சி அளிப்போம்

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Rubbing a comb on hair makes the comb get \(–\) 0.4 \(C\).

a. Find which material has lost electron and which one gained it.

The material which lost the electron is and the material which gained the electron is .

b. Find how many electrons are transferred in this process.

[Note: Calculate in terms of seconds and enter the final answer up to one decimal place by rounding off the second decimal value.]

e = i \times 10^{i} C

The number of electrons in \(1\) coulomb of charge is given by the formula

\begin{array}{l} n = \frac{i}{i} \\ = \frac{i}{i \times 10^{i}} \\ = i \times 10^{i} electrons \end{array}

No. of electrons transferred \(=\)

\times 10^{18} electrons

Did you find an error?

9. Exercises - I